If the N900 would come with a presentational layer that is in lack of better words dead-ended in that it will not continue onto other h/w devices I must admit that I, as a novice, would feel that I would be buying into a device that will soon lack support and s/w updates as focus moves on. Even a community as active as this can't possibly juggle updates and ports between, what, five?, OS versions (Diablo/Chinook/Mer/Fremantle/Harmattan). I guess some would phase out - but aren't people still using Chinook and maybe there will still be users clinging on to Diablo after Mer comes out. It still feels like efforts would/could be spread very thin. I know that my views are simplistic but I also think that I may represent a part of the potential customer base for the N900 and I'm curious as to how Nokia is/will be addressing such concerns).